977967769 has 2 divisors, whose sum is σ = 977967770. Its totient is φ = 977967768.

The previous prime is 977967761. The next prime is 977967773. The reversal of 977967769 is 967769779.

977967769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 751856400 + 226111369 = 27420^2 + 15037^2 .

It is a cyclic number.

It is not a de Polignac number, because 977967769 - 2³ = 977967761 is a prime.

It is a super-2 number, since 2×977967769² = 1912841914405674722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (977967761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488983884 + 488983885.

It is an arithmetic number, because the mean of its divisors is an integer number (488983885).

Almost surely, 2^977967769 is an apocalyptic number.

It is an amenable number.

977967769 is a deficient number, since it is larger than the sum of its proper divisors (1).

977967769 is an equidigital number, since it uses as much as digits as its factorization.

977967769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63011844, while the sum is 67.

The square root of 977967769 is about 31272.4762211118. The cubic root of 977967769 is about 992.6013174998.

The spelling of 977967769 in words is "nine hundred seventy-seven million, nine hundred sixty-seven thousand, seven hundred sixty-nine".